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首页> 外文期刊>Journal of industrial and engineering chemistry >Monitoring oxygen-vacancy ratio in NiFe-based electrocatalysts during oxygen evolution reaction in alkaline electrolyte
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Monitoring oxygen-vacancy ratio in NiFe-based electrocatalysts during oxygen evolution reaction in alkaline electrolyte

机译：在碱性电解质中氧化反应期间监测基于NiFE的电催化剂的氧空空间率

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摘要

High oxygen-vacancy ratio has been recognized as an important criterion for oxygen evolving electrocatalysts to achieve high catalytic performance. Herein, we report changes in the oxygen-vacancy ratio during long-term stability tests. NiFe-based electrocatalysts containing various anions were prepared by a simple electrodeposition. After the fabrication procedure was optimized, the S-doped NiFe oxide electrocatalyst exhibited higher intrinsic activity than others in an alkaline electrolyte because it had the highest oxygen-vacancy ratio. During oxygen evolution at a constant positive potential, the intrinsic activity of the S-doped NiFe oxide electrocatalyst showed a significant correlation with the oxygen-vacancy ratio and surface morphology as a function of time. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：高氧空位比已被认为是氧气不断发展的电催化剂以实现高催化性能的重要标准。 在此，我们在长期稳定性测试期间报告了氧空性比的变化。 通过简单的电沉积制备含有各种阴离子的基于NiFe的电催化剂。 优化制造过程后，S掺杂的NiFe氧化物电催化剂表现出比碱性电解质中的更高的内在活性，因为它具有最高的氧空性比。 在恒定阳性电位的氧气中，S掺杂NiFe氧化物电催化剂的内在活性与氧空性比和表面形态的函数显着相关。 （c）2018年韩国工程和工程化学学会。 elsevier b.v出版。保留所有权利。

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